diff --git a/libguile/posix.c b/libguile/posix.c
index c8bbb0f83..74263a4d5 100644
--- a/libguile/posix.c
+++ b/libguile/posix.c
@@ -54,7 +54,9 @@
 
 #ifdef __MINGW32__
 # include "posix-w32.h"
-#endif
+# define SIGHUP 1
+# define SIGPIPE 13
+#endif /* __MINGW32__ */
 
 #include "async.h"
 #include "bitvectors.h"
diff --git a/libguile/scmsigs.c b/libguile/scmsigs.c
index 3cf97c1f0..d63c7a2b3 100644
--- a/libguile/scmsigs.c
+++ b/libguile/scmsigs.c
@@ -419,6 +419,23 @@ scm_sigaction (SCM signum, SCM handler, SCM flags)
   return scm_sigaction_for_thread (signum, handler, flags, SCM_UNDEFINED);
 }
 
+#if __MINGW32__
+
+SCM_DEFINE (scm_sigaction_for_thread, "sigaction", 1, 3, 0,
+           (SCM signum, SCM handler, SCM flags, SCM thread),
+            "sigaction stub")
+#define FUNC_NAME s_scm_sigaction_for_thread
+{
+  (void) signum;
+  (void) handler;
+  (void) flags;
+  (void) thread;
+  return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+#else /* !__MINGW32__ */
+
 /* user interface for installation of signal handlers.  */
 SCM_DEFINE (scm_sigaction_for_thread, "sigaction", 1, 3, 0,
            (SCM signum, SCM handler, SCM flags, SCM thread),
@@ -618,6 +635,8 @@ SCM_DEFINE (scm_sigaction_for_thread, "sigaction", 1, 3, 0,
 }
 #undef FUNC_NAME
 
+#endif /* !__MINGW32__ */
+
 SCM_DEFINE (scm_restore_signals, "restore-signals", 0, 0, 0,
             (void),
 	    "Return all signal handlers to the values they had before any call to\n"